JP6123074B2 - refrigerator - Google Patents

Description

  The present invention relates to a gasket for a refrigerator-freezer having a high energy saving effect.

As demands for energy saving become strict, reduction of intrusion heat, especially reduction of the amount of intrusion heat from the gasket portion, is emphasized by heat insulation technology. (For example, see Patent Documents 1 and 2)
Hereinafter, a conventional refrigerator gasket will be described with reference to the drawings.

  FIG. 5 is a sectional plan view of a gasket of a conventional refrigerator-freezer. In FIG. 5, a gasket 40 connects a magnet holding part 41 containing a magnet (not shown), an attachment part 42 that engages with a groove attached to a heat insulating door, and connects the magnet holding part 41 and the attachment part 42. A flexible portion 43 that is freely extended and contracted, and a magnet side bag-like portion 45 formed between the magnet holding portion 41 and the flexible portion 43 in contact with the storage chamber side of the magnet holding portion 41. Is done. Magnets provided in the gasket 41 forming the air layer are attracted to the refrigerator main body when the door is closed, so that the heat insulation box and the heat insulation door are sealed via the gasket 40. Thereby, the heat outside the refrigerator or the heat generated from the hot line penetrates into the inside of the refrigerator or the cool air inside the refrigerator leaks outside the refrigerator to prevent heat leakage.

JP 2012-37151 A JP2012-83069A

  However, in the conventional gasket configuration, the heat insulation performance can be secured by the air layer of the flexible portion that guarantees the heat insulation and stretchability. However, in order to further improve the heat insulation, it is complicated by the addition of an additional air layer, etc. In the case of the shape, there is a problem that it is difficult to guarantee quality such as long-term durability and airtightness by opening and closing the door.

  This invention solves the said conventional subject, and it aims at providing the refrigerator provided with the gasket with a high energy-saving effect.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a magnet holding part with a built-in magnet, a mounting part that engages with a groove provided in a heat insulating door, and the mounting part and the magnet holding part are freely extendable and contractible. A flexible portion connected to the magnet holding portion, a magnet lower bag-like portion formed between the magnet holding portion and the flexible portion in contact with a lower portion of the magnet holding portion, and a storage chamber side connected by the flexible portion and the connecting portion. An inner circumferential bag-like portion having a ring shape protruding in the direction, and the center in the front-rear direction of the inner circumferential bag-like portion is a door relative to the reference surface of the magnet contact surface that is in close contact with the heat insulating box It has a gasket located on the side.

  Thereby, it is possible to obtain a gasket with improved heat insulation performance while ensuring long-term durability and airtightness by opening and closing the door.

  The refrigerator of the present invention is provided with a heat insulating air layer that ensures long-term durability and airtightness in the direction of the storage room, thereby reducing the amount of intrusion heat and reducing power consumption by suppressing the movement of cool air in the cabinet. A refrigerator can be provided.

Front view of the refrigerator in Embodiment 1 of the present invention The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Sectional drawing of the gasket of the refrigerator in Embodiment 1 of this invention Sectional drawing of the frontage part of the refrigerator in Embodiment 1 of this invention Sectional view of a conventional refrigerator gasket

  1st invention is equipped with the heat insulation box formed by the inner box, the outer box, and the heat insulating material filled between the said inner box and the said outer box, and the front surface of the storage chamber in the said heat insulation box body. In the refrigerator comprising a door that can be opened and closed, and a gasket that is provided on the door and is in close contact with the front opening of the storage chamber, the gasket includes a magnet holding part that incorporates a magnet, and a groove provided in the heat insulating door. A fitting portion that engages, a flexible portion that freely connects and retracts the fitting portion and the magnet holding portion, and a magnet lower bag formed between the magnet holding portion and the flexible portion in contact with the lower portion of the magnet holding portion An inner circumferential bag-like portion having a ring shape protruding in the direction of the storage chamber connected to the flexible portion and the connecting portion, and the center in the front-rear direction of the inner circumferential bag-like portion is For the reference surface of the magnet contact surface that is in close contact with the heat insulating box, By being positioned on the side, when the door is closed, the magnet contact surface comes into close contact with the heat insulation box body before the inner circumferential bag-like portion, and the tightness between the heat insulation box body and the door in the door closed state And long-term durability can be ensured by suppressing the deformation amount of the inner circumferential bag-like portion.

  In addition, by connecting the flexible portion of the gasket and the gasket main body by a single connecting portion, heat conduction can be suppressed, and the inner peripheral side bag protruding in the direction of the storage chamber connected by the connecting portion. By providing the air layer of the shape part, it is possible to suppress heat transfer due to the movement of the cool air inside the cabinet, and it is possible to provide a refrigerator with reduced power consumption by suppressing heat exchange inside and outside the cabinet and reducing the amount of intrusion heat .

  According to a second aspect, in the first aspect, the ring shape of the inner circumferential bag-like portion has a lateral distance B parallel to the magnet contact surface larger than a vertical distance A orthogonal to the magnet contact surface. By being configured in this way, repulsive force due to deformation of the ring shape when the door is closed can be suppressed, and quality deterioration such as tearing due to repeated stress concentration due to repeated opening and closing of the door can be suppressed.

  According to a third invention, in the first or second invention, the distance C to the center in the left-right direction of the inner circumferential bag-like portion is configured to be larger than the length D of the connecting portion. The balance between the size of the ring-shaped bag-shaped portion air layer and the length of the connecting portion can be optimized, and the heat insulation performance in a state where the gasket main body is in contact with the door inner and the inner box can be enhanced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view of the refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of the refrigerator in the first embodiment of the present invention. FIG. 3 is an enlarged cross-sectional view of a main part of the gasket of the refrigerator in the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the front of the refrigerator in the first embodiment of the present invention.

  In FIG. 1 and FIG. 2, a heat insulating box body 101 which is a refrigerator main body of a refrigerator 100 includes an outer box 102 mainly using a steel plate, an inner box 103 formed of a resin such as ABS, an outer box 102 and an inner box. 103 and a foam heat insulating material such as hard foam urethane filled in a space between the space 103 and the surroundings, insulated from the surroundings, and partitioned into a plurality of storage chambers. A refrigeration room 104 as a first storage room is provided at the top, and a second freezing room 105 as a fourth storage room and an ice making room 106 as a fifth storage room are provided side by side under the refrigeration room 104. The first freezing chamber 107 as the second storage chamber is disposed below the second freezing chamber 105 and the ice making chamber 106, and the vegetable chamber 108 as the third storage chamber is disposed at the bottom. ing.

  The refrigerating room 104 includes a refrigerating room right door 104a and a refrigerating room left door 104b, which are rotary doors, and a refrigerating room shelf 104c and a refrigerating room case 104d are appropriately disposed therein, so that the storage space can be easily arranged. doing. On the other hand, the other storage rooms have drawer doors, the second freezer compartment door 105a has a second freezer compartment case 105b, the icemaker door 106a has an icemaker case 106b, and the first freezer compartment. The upper freezer compartment case 107b and the lower freezer compartment case 107c are placed on the door 107a, and the upper vegetable compartment case 108b and the lower freezer compartment case 108c are placed on the frame attached to the door, respectively.

  The refrigerated room 104 is set to a refrigerated temperature zone which is a temperature that does not freeze for refrigerated storage, and is usually set to 1 ° C. to 5 ° C., and the vegetable room 108 has a refrigerated temperature zone equivalent to the refrigerated room 104 or slightly higher The vegetable temperature range is 2 ° C to 7 ° C. The first freezer compartment 107 is set in a freezing temperature zone, and is usually set at −22 ° C. to −15 ° C. for frozen storage, but in order to improve the frozen storage state, for example, −30 ° C. It may be set at a low temperature of -25 ° C.

  The second freezer compartment 105 is a first storage compartment having a freezing temperature range equivalent to that of the first freezer compartment 107 or a slightly higher temperature setting of −20 ° C. to −12 ° C. The ice making chamber 106 makes ice with an automatic ice maker (not shown) provided at the upper part of the room with water sent from a water storage tank (not shown) in the refrigerator compartment 104 and stores it in the ice making case 106b.

  The top surface portion of the heat insulating box 101 has a stepped recess shape toward the back of the refrigerator. A machine chamber 101a is formed in the stepped recess, and the compressor 109, moisture is formed in the machine chamber 101a. Houses high pressure side components of the refrigeration cycle such as a dryer (not shown) for removal. That is, the machine room 101 a in which the compressor 109 is disposed is formed by biting into the uppermost rear region in the refrigerator compartment 104.

  Thus, by providing the machine room 101a in the rear region of the uppermost storage room of the heat insulation box 101 that has become a dead space that is difficult to reach, the compressor 109 is disposed in the conventional refrigerator. The space in the machine room at the bottom of the easy-to-use heat insulation box 101 can be effectively converted as the storage room capacity, and the storage performance and usability can be greatly improved.

  The refrigeration cycle is formed of a series of refrigerant flow paths sequentially including a compressor 109, a condenser, a capillary as a decompressor, and a cooler 112, and a hydrocarbon-based refrigerant such as isobutane is enclosed as a refrigerant. Yes.

  The compressor 109 is a reciprocating compressor that compresses refrigerant by reciprocating a piston in a cylinder. In the case of a refrigeration cycle using a three-way valve or a switching valve for the heat insulation box 101, those functional parts may be disposed in the machine room 101a.

  In this embodiment, the decompressor constituting the refrigeration cycle is a capillary. However, an electronic expansion valve that can freely control the flow rate of the refrigerant driven by the pulse motor may be used.

  In the present embodiment, the matter relating to the main part of the invention described below is a type in which a compressor room is provided by providing a machine room in the rear region of the lowermost storage room of the heat insulating box 101, which has been generally used conventionally. It may be applied to other refrigerators.

  A cooling chamber 110 for generating cold air is provided on the back surface of the first freezing chamber 107, and the storage chamber consisting of the second freezing chamber 105, the ice making chamber 106, and the first freezing chamber 107 is separated from the cooling chamber 110. Therefore, a partition member 111 is configured. A cooler 112 is disposed in the cooling chamber 110 and exchanges heat with air warmed by exchanging heat with the storage chamber to generate cold air. The partition member 111 includes a storage chamber side partition member 111 a and a cooling chamber side partition member 111 b, and the cooling chamber side partition member 111 b includes a blower 113. The space between the storage chamber side partition member 111a and the cooling chamber side partition member 111b is an air duct 111c, and cool air forcedly sent out by the blower 113 is stored in the refrigerating chamber 104, the second freezing chamber 105, and the ice making chamber. 106, the first freezer compartment 107 and the vegetable compartment 108.

  The lower space of the cooler 112 is provided with a radiant heating means 114 made of glass tube for defrosting the frost and ice adhering to the cooler 112 and its surroundings at the time of cooling. A drain pan 115 for receiving the generated defrost water, a drain tube 116 penetrating from the deepest part to the outside of the cabinet are configured, and an evaporating dish 117 is configured outside of the downstream side.

  The upper discharge port 120 is provided between the partition wall 118 that partitions the refrigerator compartment 104 and the other storage chamber and the storage chamber side partition member 111a, and the second freezing chamber 105, the ice making chamber 106, and the first freezing chamber 107 are provided. Send cool air as shown by the arrow in the figure. The cold air discharged into the storage chamber is circulated through the second freezer compartment case 105c, the ice making compartment case 106b, the upper freezer compartment case 107b, and the lower freezer compartment case 107c, and then provided below the storage compartment side partition member 111a. The returned suction port 125 is passed through and returned to the cooler 112 for circulation.

  The partition wall 118 is provided with a damper 121, and the cold air passing through the damper 121 is further divided into a refrigerator compartment duct 122 and a vegetable compartment duct (not shown). It is sent to the vegetable compartment 108.

  As shown also in FIGS. 1 and 2, each of these storage rooms, that is, the refrigerator compartment 104, the second freezer compartment 105, the ice making room 106, the first freezer compartment 107, and the vegetable compartment 108 are provided in front of each other. Insulating doors, that is, a refrigerator compartment right door 104a, a refrigerator compartment left door 104b, a second freezer compartment door 105a, an ice making compartment door 106a, a first freezer compartment door 107a, and a vegetable compartment door 108a have storage chambers for each door. At the peripheral edge on the side, a gasket 130 is formed by sealing a gap between the door and the heat insulating box 101 to prevent heat leakage and extruding a soft resin such as polyvinyl chloride.

  Next, the gasket of the refrigerator of this invention is demonstrated using FIG. 3, FIG. The gasket 130 includes an inner box 103, an outer box 102, a heat insulating box 101 formed by a heat insulating material filled between the inner box 103 and the outer box 102, and storage of the heat insulating box 101 in different temperature zones. A partition wall 118 that divides the chamber up and down, a plurality of storage chambers that are supplied with cold air inside the heat insulating box 101, a door that can be opened and closed on the front of each storage chamber, and a door provided in the door at the front opening of the storage chamber In the refrigerator 100 provided with the gasket 130 to be in close contact with, a magnet holding part 131 containing a magnet, a mounting part 132 that engages with a groove provided in the heat insulating door, and a gasket between the mounting part 132 and the magnet holding part 131. A flexible portion 133 that guarantees stretchability, and a magnet lower bag-like portion 134 formed between the magnet holding portion 131 and the flexible portion 133 in contact with the lower portion of the magnet holding portion 131 are provided. There.

Furthermore, the magnet holding part 131 has a magnet side bag-like part 135 in contact with the storage chamber side, and the magnet lower bag-like part 134 is configured to straddle the magnet holding part 131 and the magnet side bag-like part 135.

  Further, the gasket 130 includes an inner peripheral side bag-like portion 136 that extends to the flexible portion 133 and is independent in the direction toward the inside of the storage chamber.

  In addition, a heat conduction suppression groove is provided between the attachment portion 132 and the magnet holding portion 131 on the outside air side of the attachment portion 132.

  Specifically, the gasket in which the magnet holding part 131, the attachment part 132, the flexible part 133, the magnet lower bag-like part 134, the magnet side bag-like part 135, the flexible part 133, and the inner circumferential side bag-like part 136 are formed. In the main body, the magnet holder 131 is disposed on the upper side in FIG. The magnet holding part 131 has a horizontally long cross section and is housed with a magnet inserted therein.

  Further, by providing a partition in the mounting portion 132, the air layers 132a and 132b, the air layer inside the flexible portion 133, the air layer inside the magnet lower bag-like portion 134, and the magnet side bag-like portion 135 are provided. And an air layer inside the inner circumferential side bag-like portion 136 are formed. As described above, the inside of the gasket body is divided into the magnet holding portion 131 and the plurality of air layers. The air layer formed by the flexible portion 133 is configured to have the maximum area among the plurality of air layers. The ring-shaped air layer formed by the inner circumferential bag-like portion 136 having a ring shape is connected to the flexible portion 133 by a single connecting portion and protrudes in the direction of the storage chamber. The center in the front-rear direction of the inner circumferential bag-like portion 136 is located on the door side with respect to the reference surface of the magnet contact surface that is in close contact with the heat insulation box 101 with respect to the magnet contact surface that is in close contact with the heat insulation box. Is.

  Further, the ring shape of the inner circumferential bag-like portion 136 constituting the air layer located on the storage chamber side is such that the lateral distance B parallel to the magnet contact surface is larger than the vertical distance A orthogonal to the magnet contact surface. It is configured.

  Furthermore, the distance C to the center in the left-right direction of the inner circumferential bag-like portion 136 is configured to be greater than the length D of the connecting portion.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the gasket 130 of the present invention is installed between the cabinet and the open / close door for the purpose of heat insulation inside and outside the cabinet, and can effectively block the exposure of cold inside the cabinet, and the heat outside the cabinet is heated inside the cabinet. A plurality of bag-like portions and fins are arranged so as to suppress intrusion into the body. The present invention improves the heat insulation effect by providing a heat insulation air layer by providing a magnet lower bag-like portion 134 in the lower portion of the magnet holding portion 131 that is in the flexible portion 133 that guarantees stretchability and contains a magnet. I was able to do that. Also, a magnet lower bag-like portion 134 straddling the magnet holding portion 131 and the magnet horizontal bag-like portion 135 below the magnet holding portion 131, and a magnet horizontal bag-like portion on the lateral side of the magnet holding portion 131 on the storage chamber side. By providing 135, a heat-insulating air layer is formed around the magnet, and the amount of intrusion heat can be reduced by suppressing heat leakage from the outside and the magnet. In addition, by providing the inner circumferential bag-like portion 136 that protrudes in the direction of the storage chamber connected to the flexible portion 133 with one connecting portion, a heat insulating air layer is formed inside the storage chamber and the movement of the gas in the chamber By suppressing heat transfer and heat conduction from the gasket 130 main body of the present invention, heat exchange inside and outside the cabinet can be suppressed and the amount of intrusion heat can be reduced.

The gasket 130 when the door provided on the front surface of each storage chamber is opened follows the door side and leaves the heat insulating box 101. Next, the gasket 130 when this opened door is closed.
In the process in which the door is close to the heat insulating box 101, the magnet holding part 131 containing the magnet is attracted to a metal material member such as the outer box 102. At this time, the flexible portion 133 is stretched by being pulled by the magnetic force of the magnet, and then contracts in the process where the door is completely closed. Such shrinkability of the flexible portion 133 of the gasket 130 ensures the hermeticity of the refrigerator. Then, at the same time when the door is completely closed, the inner peripheral side bag-like portion 136 connected to the flexible portion 133 by one short connecting portion is brought into contact with the inner box 103 and sandwiched between the door inner 137 and the inner box 103. . The compressibility of the inner circumferential side bag-like portion 136 of the gasket 130 can enhance the hermeticity of the refrigerator.

  The center in the front-rear direction of the inner circumferential bag-like portion 136 is against the reference surface of the magnet contact surface that is in close contact with the heat insulation box 101 with respect to the magnet contact surface that is in close contact with the heat insulation box 101. When the door is closed, the magnet contact surface is in close contact with the heat insulating box body 101 before the inner circumferential side bag-shaped portion 136 and is sandwiched between the heat insulating box body 101 and the door in the closed state. By reducing the amount of deformation of the compressed inner circumferential side bag-like portion 136, long-term durability is ensured and a heat insulating air layer is formed, and the cold air flowing in between the heat insulating box 101 and the inner side surface of the heat insulating door By suppressing heat transfer due to movement, the cold airflow in the cabinet can be shielded more efficiently, and heat leakage to the outside of the cabinet can be suppressed. Further, the inner bag portion 136 of the gasket 130 when the door is opened falls to the door side, and the appearance when actually used by the customer can be ensured.

  Further, the ring shape of the inner circumferential bag-like portion 136 constituting the air layer located on the storage chamber side is such that the lateral distance B parallel to the magnet contact surface is larger than the vertical distance A orthogonal to the magnet contact surface. Therefore, repulsive force due to deformation of the ring shape when the door is closed can be suppressed, and quality degradation such as tearing due to repeated stress concentration due to opening and closing of the door can be suppressed. Further, the gasket 130, the door inner 137 and the inner box 103 can be in intimate contact with each other and long-term durability can be ensured, and the cool air leakage in the cabinet can be suppressed, the amount of intrusion heat can be reduced, and the power consumption can be reduced.

  Moreover, since the distance C to the center in the left-right direction of the inner circumferential side bag-like portion 136 is configured to be larger than the length D of the connecting portion, heat conduction by the connecting portion and the inner circumferential side bag-like portion 136 are configured. The effect of suppressing the heat transfer of the cool air inside the cabinet by the air layer can be increased, and the heat insulation performance in a state where the gasket 130 is in contact with the door inner and the inner box 103 can be enhanced. Further, the balance between the size of the inner circumferential side bag-like portion 136 projecting in the direction of the storage chamber 136 and the length of the short connecting portion connecting the flexible portion 133 of the gasket 130 can be ensured, and the above-mentioned inner space accompanying the opening and closing of the door can be guaranteed. The repulsive force of the circumferential bag-shaped part ring shape and the amount of loose deformation in the front and rear of the connecting part can be suppressed.

  That is, when the length D of the connecting portion is fixed, when the distance C between the center of the ring shape of the inner circumferential side bag-like portion 136 and the connecting point is small, the repulsive force of the ring shape of the door opening / closing increases, but the outer shape of the ring As a result, the load on the connecting portion that holds the ring is small. Conversely, if the distance C between the center of the ring shape of the inner circumferential side bag-shaped portion 136 and the connection point is large, the repulsive force of the ring shape will be small, but the outer shape of the ring itself will be large, and the burden on the connection portion holding the ring will be reduced. large. Further, when the distance C between the ring-shaped center of the inner circumferential side bag-like portion 136 and the connecting point is fixed, if the length D of the connecting portion is small, the amount of loose deformation of the connecting portion due to opening and closing of the door can be suppressed. However, the heat conduction suppressing effect from the connecting portion to the inner circumferential side bag-like portion 136 is small. On the contrary, if the length D of the connecting portion is large, the effect of suppressing heat conduction from the connecting portion to the inner circumferential bag-like portion 136 is large, but the amount of loosening deformation of the connecting portion along with opening and closing of the door increases. As described above, by making the distance C between the ring-shaped center of the inner circumferential bag-like portion 136 and the connection point larger than the length D of the connection portion, the gasket heat insulating performance and quality can be ensured in an optimal state.

As described above, in the present embodiment, the inner circumferential side bag having a ring shape protruding in the direction of the storage chamber of the heat insulating box 101 connecting the configuration of the gasket 130 with the flexible portion 133 by one short connecting portion. The center of the inner peripheral side bag-like portion 136 is located on the door side with respect to the magnet contact surface that is in close contact with the heat insulating box body 101, and thereby the inner peripheral side bag-like portion 136 that is closed by the door. By reducing the amount of deformation, airtightness and long-term durability are ensured, the cold airflow in the cabinet is shielded more efficiently, heat leakage to the outside of the cabinet is suppressed, the amount of heat entering from the gasket 130 is reduced, and the amount of power consumption The refrigerator which reduced can be provided.

  As mentioned above, since the gasket of the refrigerator concerning this invention can improve heat insulation performance, it can apply to all the cooling devices provided with the heat insulation box which has a door.

DESCRIPTION OF SYMBOLS 100 Refrigerator 101 Heat insulation box 102 Outer box 103 Inner box 104 Refrigeration room 105 2nd freezer room 106 Ice making room 107 1st freezer room 108 Vegetable room 104a Refrigeration room right door 104b Refrigeration room left door 105a Second freezer room door 106a Ice making room door 107a First freezer room door 108a Vegetable room door 130 Gasket 131 Magnet holding part 132 Mounting part 133 Flexible part 134 Magnet lower bag-like part 135 Magnet side bag-like part 136 Inner circumferential side bag-like part 137 Door inner 138 Door shell

Claims (3)

A heat insulating box formed by an inner box, an outer box, a heat insulating material filled between the inner box and the outer box, and an openable / closable door provided on the front surface of the storage chamber in the heat insulating box. In a refrigerator provided with a gasket provided on the door and in close contact with the front opening of the storage room,
The gasket includes a magnet holding part with a built-in magnet, a mounting part that engages with a groove provided in a heat insulating door, a flexible part that freely connects the mounting part and the magnet holding part, and a magnet holding part. A magnet lower bag-like part formed between the magnet holding part and the flexible part in contact with the lower part, and an inner circumferential side bag having a ring shape protruding in the direction of the storage chamber connected to the flexible part by the connecting part With a shape part,
The center in the front-rear direction of the inner circumferential bag-like portion is located on the door side with respect to a reference surface of a magnet contact surface that is in close contact with the heat insulating box. The ring shape of the inner circumferential bag-like portion is configured such that a lateral distance B parallel to the magnet contact surface is larger than a longitudinal distance A orthogonal to the magnet contact surface. The refrigerator according to 1. The refrigerator according to claim 1 or 2, wherein the distance C to the center in the left-right direction of the inner circumferential bag-like portion is configured to be larger than the length D of the connecting portion.

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